ClinicalTrials.gg
Active, not recruitingNCT03480061Updated Dec 24, 2024

Dexmedetomidine to Reduce the Incidence of POCD After Open Cardiac Surgery

A Phase 4 interventional study of Dexmedetomidine Hydrochloride Group in Delirium, Postoperative Cognitive Dysfunction and Dexmedetomidine, sponsored by Sunnybrook Health Sciences Centre. Active, not recruiting at 1 site in Canada. Open to participants aged 60 Years and older. Per ClinicalTrials.gov, last updated 2024-12-24.

Sponsored by Sunnybrook Health Sciences Centre · Phase 4, Interventional, and Prevention

From the registry’s dates

  • Primary completion was expected by Jul 2026, 4 months ago, but the record still lists the study as active, not recruiting.

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Phase
Phase 4
Study type
Interventional
Enrollment
90
Allocation
Randomized
Ages
60 Years and older
Sex
All
01

Where this study stands

Counted across the records on this site · 2026-11-13

Among 78 studies testing dexmedetomidine in Delirium — 16 open to participants now, 18 under way, 4 of them phase 3. Dexmedetomidine · Delirium.

Planned enrollment
41st of 78
90 · median 98
Started
2018
with 4 others
Phase 4
35 of 78
6 open now
Primary completion
2026-07
later than 9 of 17 live
Registered
40th of 78
by date

Among the 78 studies testing dexmedetomidine in Delirium, this one is the 41st largest by planned enrollment, is one of 5 that started in 2018, is one of 35 in phase 4, reaches primary completion later than 9 of the 17 other live ones, and was the 40th registered.

Delirium

933 studies on the registry are indexed under Delirium; 189 are open to participants now.

Browse Delirium studies →

Open to participants now

16 of the 78 studies testing dexmedetomidine in Delirium are open now, in 6 countries. Recruiting first, the newest first:

11 more — sign in →

By country, each count listing its studies:

All 16 open studies →

About dexmedetomidine

Dexmedetomidine: first FDA approval 1999 (PRECEDEX), first EMA approval 2011. What it is approved for, and how studies give it, is on its page →

Who these studies take

Of the 127 Delirium studies recruiting now, 99 (78%) set no upper age limit and 8 (6%) stop at 75 or younger; 8 take children under 18; 15 take healthy volunteers.

This study: 60 Years and older · all sexes · no healthy volunteers.

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Watch this landscapeDownload CSVNarrow it in search →With an account: a weekly mail of what changed among 78 studies testing dexmedetomidine in Delirium, or all of them as a file.
02

Study summary

Anesthesia is a drug induced, reversible, comatose state that facilitates surgery and it is widely assumed that cognition returns to baseline after anesthetics have been eliminated. However, many patients have persistent memory impairment for weeks to months after surgery. Cardiac surgery appears to carry the highest risk of postoperative cognitive dysfunction (POCD). These cognitive deficits are associated with increased mortality, prolonged hospital stay and loss of independence. The investigators propose to investigate the role of Dexmedetomidine (DEX) in preventing long-term POCD after cardiac surgery and enhancing early postoperative recovery. It is anticipated that DEX will be the first effective preventative therapy for POCD, improve patient outcomes, and reduce length of stay and healthcare costs.

Read the detailed description

Dexmedetomidine (DEX), a highly potent and selective α2-adrenoceptors (α2R) agonist used in clinical practice for sedation, analgesia, and anxiolysis, was recently shown to have beneficial effects on early cognitive changes by reducing delirium in humans.It also reduced memory impairment after surgery and isoflurane anesthesia, both in elderly mice (20-22 months) and in pups exposed to anesthesia in the early postnatal period. Importantly, co-treatment with DEX has been shown to restore learning and memory function in rats exposed to propofol in utero. Therefore, the investigators set out to investigate whether DEX has an effect on cognitive dysfunction months after surgery and whether it accelerates cognitive recovery from anesthesia and surgery.

Participants will be randomized 1:1 in permuted blocks of 4 to 8. The randomization sequence will be computer generated and stratified by 2 factors, planned procedure (CABG/CABG + valve or valve only procedure) and study site (for full multicentre trial).

In hospital outcomes include delirium (assessed twice daily post-operative day (POD) 0-10, death, hemodynamic instability requiring vasopressors, time to extubation, re-intubation (and reason), length of stay (in Cardiovascular Intensive Care Unit and total hospital), POCD, depressive symptoms between POD 4-10, post-operative complications (infection [surgical site, sepsis, pneumonia], myocardial infarction, renal replacement therapy, re-operation, cumulative opioid consumption (to POD 4), in-hospital mortality.

Post-operative outcomes include POCD (3/6/12 months), depression (3/6/12 months), mild cognitive impairment (MCI) at 3/6/12 months (defined as 1-2 standard deviations below age matched controls), persistent surgical site pain at sternotomy/thoracotomy/graft harvest site (Brief Pain Inventory, 3/6/12 months), recovery (3,6, 12 months).

03

Conditions studied

  • Delirium
  • Postoperative Cognitive Dysfunction
  • Dexmedetomidine
  • Cognitive Impairment
  • Depression
04

Who can participate

Ages eligible
60 Years and older
Sexes eligible
All
Accepts healthy volunteers
No

Go through the criteria one by one — yes, no or not sure — and take the list to your doctor or the study team. Kept in this browser only.

Inclusion criteria

  • Planned CABG (including off-pump) or valve replacement (+/- CABG) via sternotomy/thoracotomy, with initial recovery in the Cardiovascular Intensive Care Unit (CVICU)
  • age ≥60

Exclusion criteria

Exclusion Criteria:

  • Lack of patient consent
  • Pregnant or nursing females
  • Pre-operative major cognitive dysfunction (CogState Brief Battery score \< 80)
  • Aortic arch replacement/re-implantation (Bentalls)
  • Allergy/ to dexmedetomidine (untreated 2nd degree type 2 or 3rd degree heart block (pacemaker), cirrhosis, HR \< 50 , grade 4 LV, renal failure or on renal replacement therapy)
  • Unlikely to comply with study assessments (e.g. no fixed address, cannot complete cognitive tests at the 3, 6, and 12 month timepoints)
Terms in these criteria, in plain language(1)

Underlined terms in the criteria open these too. Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.

Contraindication

A reason a treatment, test or procedure should not be given to a particular person, such as an allergy, another illness or a medicine they take.

05

Study design

Phase
Phase 4
Primary purpose
Prevention
Allocation
Randomized
Intervention model
Parallel assignment
Masking
Double (Participant, Outcomes assessor)
Enrollment
90 participants (estimated)

Study arms

  • Active comparator
    Dexmedetomidine Hydrochloride Group

    Patients will receive a loading dose of 1 μg/kg dexmedetomidine prior to transfer to CVICU over 20 min immediately postoperative, followed by continuous infusion of 0.1- 1.0 μg/kg/h for up to 24 hours or until patient is ready for discharge from CVICU (whichever is earlier).

    Drug: Dexmedetomidine Hydrochloride Group

  • No intervention
    Standard of Care Group

    Standard sedation protocols will be followed at the discretion of the attending physician.

Interventions

  • Dexmedetomidine will be initiated prior to transfer to the CVICU with loading dose of 1 ug kg-1 over approximately 20 minutes. This will be followed by an infusion at 0.1-1.0 ug kg-1h-1 in CVICU for up to 24 hours from the time DEX infusion started or until the patient is ready for discharge from the CVICU (whichever is earlier).

    Also known as: Dexmedetomidine Hydrochloride

06

What researchers measure

Primary outcomes

  1. Rate of recruitment

    Ability to recruit 15% a full trail sample size (90 participants)

    Time frame: 12 Months

Secondary outcomes

  1. Completion of follow-up assessments

    Ability to achieve 90% follow-up of administering cognitive assessment 3 months after surgery

    Time frame: 3 months

07

Study locations

1 site
08

References and documents

Individual participant data

Plan to share: No

No publications or documents are linked to this record.

09

Timeline

Tracking since Sep 25, 2026
ElapsedEstimatedEstimated, not yet reachedSimilar studies: half by the dot; the band is the middle halfHalf of similar studies reached it by the dot; the band is the middle half, from a quarter to three quarters

Started Aug 2018 (actual). Primary completion is estimated for Jul 2026, 95 months after the start.

Of 40 non-industry phase 4 interventional studies under Delirium, half reached primary completion within 44 months of starting (the median), counting those still running; a quarter within 25 and three quarters within 65. This study's planned 95 months is above that.

Counting every sponsor, half of 40 studies reached it within 44 months; a quarter within 25 and three quarters within 65.

How these figures are worked out, and which studies are left out of them.

Registered
Mar 21, 2018
First posted
Mar 27, 2018
StartActual
Aug 9, 2018
Primary completionEst.
Jul 2026
CompletionEst.
Dec 2026
Last update
Dec 24, 2024
What these dates mean
Start.
When the first participant enrolled; while estimated, when the study expects to open to recruitment.
Primary completion.
When the last participant was examined or treated to collect data for the study's main question, its primary outcome. A study that stopped early gives the date its data collection stopped.
Completion.
When the last participant's last visit took place, for every outcome, secondary ones and side effects included: the end of the study. Often later than primary completion, sometimes the same day.
Actual and Est.
Actual means the registry says the date has happened. Est. (estimated) is a date the sponsor plans or expects. It can still move, and the sponsor is expected to change it to actual once it has passed.
No changes since tracking began. The registry record was last updated on Dec 24, 2024, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
10

Registry details

Key details

Study ID
NCT03480061
Responsible party
Sponsor
First posted
Mar 27, 2018
Start date
Aug 9, 2018
Primary completion
Jul 2026 (estimated)
Completion
Dec 2026 (estimated)
Last update
Dec 24, 2024

Study contacts

Stephen Choi, MD,MSc,FRCPC
principal investigator · Sunnybrook Health Sciences Centre
Sinziana Avramescu, MD,PhD,FRCPC
principal investigator · Sunnybrook Health Sciences Centre

Oversight

Data monitoring committee
No
FDA-regulated drug
No
FDA-regulated device
No
View the source record on ClinicalTrials.gov ↗

Not currently enrolling

This study is active, not recruiting, as verified in Nov 2024. You cannot join it, but the record below documents what was studied.

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Discussion

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Studies of the drug tested here: Dexmedetomidine

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